I know of at least two black women who have never voted GOP in their history, but will be supporting Trump. They are furious with illegal immigration.
Trump must actively campaign in black neighborhoods and point out the simple fact that supporting the Democrat party has been disastrous for blacks. He does that and Election night will be a landslide victory party.
My dental hygienist is an older black woman who regaled me tales about pounding the pavement for Shirley Chisholm back in the day.
She's voting for Trump. Loves him!